The table below shows voter turnout figures for the 2002 Gubernatorial Primary election along with figures for the past three gubernatorial primary elections. See also: Gubernatorial General Election turnout, Primary Election turnout, and other past elections data.
| County | 2002 Turnout Percentage | 1998 Turnout | 1994 Turnout | 1990 Turnout |
|---|---|---|---|---|
| Allegany | 37.73% | 37.55% | 48.50% | 46.21% |
| Anne Arundel | 27.81% | 33.24% | 41.04% | 35.73% |
| Baltimore City | 36.35% | 29.88% | 32.50% | 27.62% |
| Baltimore County | 32.53% | 28.02% | 43.52% | 28.70% |
| Calvert | 22.81% | 31.99% | 40.43% | 44.03% |
| Caroline | 27.51% | 27.84% | 51.36% | 37.36% |
| Carroll | 33.10% | 30.64% | 42.20% | 32.34% |
| Cecil | 27.89% | 30.56% | 38.84% | 44.23% |
| Charles | 22.52% | 20.56% | 36.11% | 33.42% |
| Dorchester | 42.47% | 43.06% | 51.11% | 50.08% |
| Frederick | 24.51% | 29.02% | 35.41% | 28.58% |
| Garrett | 39.19% | 52.84% | 56.39% | 44.61% |
| Harford | 30.08% | 34.71% | 42.85% | 33.73% |
| Howard | 25.55% | 26.42% | 41.80% | 24.77% |
| Kent | 45.72% | 44.27% | 59.99% | 48.96% |
| Montgomery | 31.05% | 26.23% | 37.93% | 32.65% |
| Prince George's | 32.25% | 23.64% | 39.06% | 34.77% |
| Queen Anne's | 40.20% | 36.74% | 46.47% | 43.36% |
| St. Mary's | 33.97% | 30.73% | 46.67% | 42.49% |
| Somerset | 37.64% | 26.03% | 43.10% | 49.32% |
| Talbot | 32.26% | 31.19% | 40.38% | 40.95% |
| Washington | 20.50% | 31.52% | 38.56% | 34.19% |
| Wicomico | 29.39% | 25.81% | 35.83% | 39.67% |
| Worcester | 32.25% | 28.99% | 37.94% | 44.83% |
| Total | 30.76% | 28.64% | 39.57% | 32.72% |